孙菲菲 David Abler 于晓华 :中国的作物配置和化肥使用报酬增长【转】
*中文标题和摘要系简单翻译,可能存在部分错误,请以英文为准
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摘要:
本研究揭示了作物配置对中国农业化肥经济报酬的影响,并尝试从不同角度解释化肥使用量的增长趋势,尽管政府尝试限制使用。我们在理论上以及通过模拟和实证分析表明,虽然肥料的边际产量在集约边际(intensive margin)下降(对于特定作物),但这可能会被广延边际( extensive margin)处肥料边际产量的增加所抵消(由于所生产作物的结构)。
Abstract:
This study sheds light on the effects of crop allocation on economic returns to chemical fertilizer in Chinese agriculture and attempts to explain the increasing trend of aggregate fertilizer use from a different angle even though the government tried to limit the application. We show in theory and through simulation and empirical analyses that while the marginal product of fertilizer is declining at the intensive margin (for a specific crop), this may be offset by an increasing marginal product of fertilizer at the extensive margin (due to shifts in the structure of crops produced).
原文链接(点击“阅读原文”跳转):
https://doi.org/10.3368/wple.97.2.072419-0100R1
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撰文编辑:王煜正
审核:龙文进